Artifacts show when using Minecraft's native panorama creator

[VindSole]

When using the native panorama creator, activating using the "-DMC_DEBUG_ENABLED -DMC_DEBUG_PANORAMA_SCREENSHOT" JVM argument or a mod that activates the code, there is a few artifacts in the sky, showing some dot artifacts and distorting the horizon fog.
Setting "avoid_redundant_framebuffer_switching" to false fixes the issue, but since it's enabled by default I think it qualifies as a bug.

[RaphiMC]

Upload the game log

[VindSole]

My bad, I forgot. Upon further investigation I found the bug Is caused by more than one mod which is, ignoring dependencies; Chunks fade in, Renderscale and immediatelyfast, removing any of these mods stops the issue, so I don't know how or by whom can it be fixed.

Here is the log https://mclo.gs/VwuvjE6